Which military role is primarily tasked with overall mission planning and execution?

The role primarily tasked with overall mission planning and execution is typically held by officers, including those in the Russian military context. Officers have the responsibility to devise strategies, allocate resources, and ensure that missions are carried out effectively, which encompasses both tactical and operational planning. This involves a comprehensive understanding of the mission objectives, the capabilities of their units, and the environment in which they operate.

In contrast, the other roles mentioned focus on specific aspects of military operations. Medics are dedicated to providing medical care and support to soldiers, ensuring their health and readiness for missions. Infantry soldiers are primarily engaged in ground combat and executing orders related to direct action, rather than planning those operations. Logisticians handle supply chain management and resource allocation but do not typically engage in mission strategy or execution on the same broad strategic level as officers. Thus, the primary responsibility for overall mission planning and execution is rightly attributed to officers, making the choice of Russian officers the most accurate in this context.